The only bridge in the United States where BASE jumping is legal without a permit year-round.

Where the famed daredevil attempted to launch himself across a canyon in a custom-built rocket.

These falls, sometimes called the "Niagara of the West," still put on a good show at the right time of year.

This rustic old building is said to be the most photographed barn in America.

Concrete strongholds stand guard over the Golden Gate.

Ride on a fully-restored Nike nuclear-tipped missile elevator from the Cold War.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

A New England-style lighthouse along California's beautiful Highway 1 gets a re-do.

A 1920s navigation arrow for airmail is preserved right off Interstate 80 near the southern edge of the Great Salt Lake

This former train station was once an important shipping depot for the regions farmers.

The Corinthian columns that towered over Abraham Lincoln’s inauguration stand proud.

The 5.5-mile ring of steel posts around the Capitol Building is one of the largest (and most uniform) of its kind in the world.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

Built in the 1850s, this church was of the first five churches constructed in Harper's Ferry.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

A double agent hid information for the Soviet Union beneath this bridge for more than 20 years.